Patents Represented by Law Firm Home Roberts & Owen LLP
  • Patent number: 6097629
    Abstract: The invention relates to a non-volatile, static random access memory (nvSRAM) device that is capable of high speed copying of the data in the static random access portion of the device into the non-volatile portion of the device after the detection of possible loss of power. This is accomplished by preparing the non-volatile portion for receiving a bit of data from the SRAM portion before the possible loss of power is detected, i.e., pre-arming the device. In one embodiment, the pre-arming is accomplished by erasing the non-volatile portion during the time when the power supply is stable and data can be transferred between the SRAM portion and the exterior environment. In another embodiment, pre-arming is accomplished by erasing the non-volatile portion immediately after power has been provided to the device and data from the non-volatile portion has been copied into the SRAM in a recall operation. Another aspect of the invention provides for the decoupling of the erase and store operations.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: August 1, 2000
    Assignee: Simtek Corporation
    Inventors: Daryl G. Dietrich, Paul F. Ruths, Christian E. Herdt